Why Circle Line broke down: SMRT #Singapore

oversaw the initial installation of the cables. Explaining last Tuesday's breakdown, Khoo said a damaged power cable was installed under the Dakota station train tracks, in the direction heading toward Dhoby Ghaut . The wires inside the cable were then exposed to water that had seeped into its encasing pit due to tunnel leakage. Tunnel leakage is a common occurrence in SMRT’s train lines but had not caused problems at its main North-South and East-West lines because those lines were equipped with a drainage system. Over time, the cable deteriorated and finally broke completely at 5:27am last Tuesday. This caused a power trip in the circuit breaker at Dakota station and cut power to the entire Circle Line . To uncover what had happened, Khoo said engineers systematically isolated and tested sections of the 36-kilometre rail on the tracks before they identified the affected ...